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Electrical and Computer Engineering
Electrical and Computer Engineering Faculty Publications and Presentations
- Keyword
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- Logic circuits -- Design and construction (30)
- Lasers (27)
- Gaussian beams (23)
- Underwater acoustics (20)
- Quantum computers (15)
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- Logic synthesis (13)
- Quantum theory (13)
- Reversible computing (11)
- Acoustical engineering (10)
- Distributed resources (Electric utilities) (9)
- Machine learning (9)
- Noise (9)
- Ultrashort laser pulses (9)
- Computer networks -- Security measures (8)
- Electric utilities -- Security measures (8)
- Quantum computers -- Testing (8)
- Quantum computing (8)
- Signal processing (8)
- Smart power grids -- Communication systems -- Security measures (8)
- Computer algorithms (7)
- Logic circuits (7)
- Neural networks (Computer science) (7)
- Quantum electronics (7)
- Wave guides -- Research (7)
- Acoustics (Physical sciences) (6)
- Computer algorithims (6)
- Electrical engineering -- Study and teaching (Higher) (6)
- Lasers -- Calibration (6)
- Ocean sounds (6)
- Speckle (6)
- Publication Year
Articles 391 - 397 of 397
Full-Text Articles in Engineering
Output Properties Of Short-Pulse Gain-Switched Lasers, Lee W. Casperson
Output Properties Of Short-Pulse Gain-Switched Lasers, Lee W. Casperson
Electrical and Computer Engineering Faculty Publications and Presentations
A formalism is derived for analyzing the spectral and temporal properties of gain-switched lasers. The development of the longitudinal mode structure from spontaneous emission, limiting linewidths, and over-all spectral characteristics are considered in detail; and applications are discussed.
Air Breakdown In A Radial-Mode Focusing Element, Lee W. Casperson, Mohammad Shabbir Shekhani
Air Breakdown In A Radial-Mode Focusing Element, Lee W. Casperson, Mohammad Shabbir Shekhani
Electrical and Computer Engineering Faculty Publications and Presentations
A new radial focusing device is described that condenses an incident laser beam to an extremely intense and uniformly illuminated focal spot. The focal region is useful for many applications. When used with a 10.6-µm CO₂ TEA laser source, a disk-shaped air-breakdown spark results, and the properties of this spark have been investigated.
Gaussian Light Beams In Inhomogeneous Media, Lee W. Casperson
Gaussian Light Beams In Inhomogeneous Media, Lee W. Casperson
Electrical and Computer Engineering Faculty Publications and Presentations
Vector wave solutions are obtained for the propagation of beams of light in media having slow spatial variations of the gain, loss, or index of refraction. The formalism developed here is applicable to a wide range of problems, and an exa mple considered in detail is the propagation of off-axis beams in lenslike laser materials and optical waveguides. A procedure is also described for the diagnosis of localized dielectric inhomogeneities such as plasmas by means of Gaussian laser beams.
Cylindrical Laser Resonators, Lee W. Casperson
Cylindrical Laser Resonators, Lee W. Casperson
Electrical and Computer Engineering Faculty Publications and Presentations
A general class of cylindrical laser resonators is described in which the radiation propagates partially in the radial direction. There is a strong focusing of energy at the axis of such resonators. The low-loss cavity modes are related to ordinary gaussian beam modes. Two limiting forms are the disk laser and the tube laser, and some applications are considered.
Gain And Dispersion Focusing In A High Gain Laser, Lee W. Casperson, Amon Yariv
Gain And Dispersion Focusing In A High Gain Laser, Lee W. Casperson, Amon Yariv
Electrical and Computer Engineering Faculty Publications and Presentations
The transverse modes of a laser resonator containing a medium with a strong radial gain profile differ greatly from the modes of a similar resonator containing a low gain medium. Focusing and defocusing effects result from the gain profile and from the associated dispersion profile. The dispersion focusing causes an asymmetry in the power output as the laser is tuned across the gain line. The theory has been verified using a high gain 3.51-µ xenon laser.
Longitudinal Modes In A High-Gain Laser, Lee W. Casperson, Amon Yariv
Longitudinal Modes In A High-Gain Laser, Lee W. Casperson, Amon Yariv
Electrical and Computer Engineering Faculty Publications and Presentations
In lasers employing high‐gain narrow‐linewidth transitions the theory predicts major departures of the mode‐splitting frequencies from their low‐gain values as well as a new type of mode splitting. The first of these effects consisting of a reduction by a factor of 2.5 of the mode splitting in a xenon 3.51‐μ laser is observed experimentally.
The Gaussian Mode In Optical Resonators With A Radial Gain Profile, Lee W. Casperson, Amon Yariv
The Gaussian Mode In Optical Resonators With A Radial Gain Profile, Lee W. Casperson, Amon Yariv
Electrical and Computer Engineering Faculty Publications and Presentations
The dependence of the parameters of the Gaussian mode in laser resonators on the properties of the medium in the cavity is studied. Experimental verification of the theoretical results is presented. It is found that the modes in a high‐gain laser may differ widely from the usual free space resonator results. Also, resonator configurations which in free space are unstable may, with a suitable medium, support low‐loss Gaussian modes.